get geico. fifteen minutes could save you fifteen percent or more. zagat just gave hertz its top rating in 15 categories, including best overall car rental. so elevate your next car rental experience with the best. it's just another way you'll be traveling at the speed of hertz. >>> if you ever wonder why i'm always encouraging you to speculate here on "mad money" even though just about every other so-called expert in the business says to stay away from these kinds of high risk high reward stocks, just take one look at sarepta therapeutics. this is a tiny little biotech company that i endorsed for speculation back on september 21st. it was trading at $14.47. and today, sarepta shot into the stratosphere, rallying to nearly $30 for a 200% gain in a single session. two weeks ago, it was a $14 stock. today, nearly a $45 stock. i don't want you to chase it because the easy money has been made. but i do want you to learn from it and maybe it pulls back. how exactly does the stock nearly triple in one day? the largest gain i've ever seen? it is your classi